I.) Extract Existing Ground Profile - Free Download PDF

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Exercise 66. Existing Ground ProfileIn normal work flows, survey will develop a ground profile for the preliminarycenterline. Only when the proposed centerline is altered from that location would itbe necessary set up a new ground profile. Since we have altered the preliminarycenterline, we need to generate a new ground profile.In this exercise, we demonstrate the use of the Existing Ground Profile tool fromProject Manager which generates and stores a profile in the GPK file which we laterdisplay. If only graphics are needed or in cases where multiple surfaces need to beprofiled at one time, then the Draw Profile tool should be used.I.)1)Extract Existing Ground ProfileOpen the MicroStation s.dgnAccess Project Manager.Do a fit view to make sure entire alignment is in viewing window.2)Select the Existing Ground Profile button from the Project Managerworkflow dialog.3)Create a new run called SR95 then select the run and press OK.GEOPAK V8i (SELECT Series 2)Existing Ground Profile 6-1

4)Populate the Ground Profile dialog as shown and press Apply. Enter theProfile Name as SR95GRN. All ground profiles should include the letters GRNto show that they are existing ground profiles and can be recognized separately fromproposed roadway profiles. Intersect mode should always be used for the mostaccurate profile displays.NOTE:The beginning and ending station of an alignment can be filled in automatically byplacing the cursor in the blank field and pressing Enter.5)When prompted for an input file name use the default name j101o**.inp (theasterisks represent the users initials) as shown in the Ground Profile Input Filedialog below and press the OK button.6)When prompted to store the profile, press Yes.6-2 Existing Ground ProfileGEOPAK Road Course Guide

Exercise 67)Press Yes to delete the 3D line string in the design file.8)After the profile is stored, exit the Ground Profile dialog and Save Settings.9)Access Coordinate Geometry. (Press the Coordinate Geometry button on theworkflow dialog).10)Access Navigator and go to Profiles.11)Select the profile ‘SR95GRN’ and press the Describe icon.12)Review the profile information in the COGO output display window.13)Close the Coordinate Geometry dialog (use X in upper right corner of the dialog).When prompted to save the COGO session press NO.GEOPAK V8i (SELECT Series 2)Existing Ground Profile6-3

II.)Drawing Ground ProfilesIt is necessary to place the profiles far enough away from the plan view area so thatgraphical information does not overlap. Zoom out as shown in the picture below toplace your profile. The next few steps will create the existing ground and proposedprofiles at the bottom right of the image.1)Access Design and Computation Manager by selecting the Plan ViewDesign option on the workflow dialog and then selecting the Design andComputation Manager icon from the tool bar or from the Main Task group when theCivil Workflows are set.2)Select the item Drafting Standards Exist. Profiles Exist. Ground.6-4 Existing Ground ProfileGEOPAK Road Course Guide

Exercise 63)Press the Draw Plan & Profile button on the secondary dialog. The ElementType is automatically set to Profiles. The Label Scale should already be set tothe desired scale of 50.4)Click on the existing ground profile ‘SR95GRN’ to invoke the following profileparameter dialog. Populate it with the station, scale and elevation parametersshown.GEOPAK V8i (SELECT Series 2)Existing Ground Profile6-5

NOTE:You do not need to enter a value in the Strip Grade Increment box. This is used todisplay elevations along the profile at the spacing entered. Normally this informationis not needed.5)Set the DP X and Y coordinates by clicking on the DP button and then click inany open area to the right of the Survey profile away from the plan view area toavoid overlapping graphics.6)We will need the GEOPAK Profile Cell later so go ahead and set it up. Click on thedrop down for PGL Chain and choose the chain name SR95. Now click onDraw Cell at XY. This places this special cell which holds all of the control datadefining this profile set up. It can be identified while using any GEOPAK profilefunction to define the control information.7)Press OK to display the ground profile. The existing profile should now be plottedin the design file.8)Exit the GEOPAK Plan and Profile Draw dialog and review your profile.9)Do not exit the D&C Manager; go on to the next section.6-6 Existing Ground ProfileGEOPAK Road Course Guide

Exercise 6III.)Drawing Profile Grids1)Go to D&C Manager.2)Double-click the item Profile Grid and the Draw Profile Grid dialog opens. Thecurrent active scale is read from the DGN file and is used to set the defaultHorizontal and Vertical Scale. Fill out the dialog as shown below.3)When all control values have been set, click on the Draw Profile Grid commandbutton.GEOPAK V8i (SELECT Series 2)Existing Ground Profile6-7

You are prompted to Data Point at Profile Origin. The profile grid range isshown dynamically.NOTE:If the profile coverage is not acceptable, you may give a Reset to stop and adjustthe control values.4)Data point at the reference origin location of the profile area.Profile with profile grid displayed.5)Click Cancel in the Draw Profile Grid dialog top close the tool and exit D&CManager.6-8 Existing Ground ProfileGEOPAK Road Course Guide

Exercise 6IV.)Working Alignment - Define Existing ProfileWe are setting the Profile View and Location sections of the Working AlignmentDefinition in Project Manager.1)From the Workflow dialog of Project Manager, press the Define button.2)Select the Profile View option and populate the dialog as depicted below (theDesign File is ROSR95Alignments.dgn).NOTE:We have not designed the proposed profile; therefore, we will return later to populatethis field.GEOPAK V8i (SELECT Series 2)Existing Ground Profile6-9

3)Select the Location option and populate the dialog as depicted below. This canall be done automatically by clicking on the Identify Cell button.Data point anywhere on the GEOPAK profile cell graphics to identify it and datapoint to accept.All control values are filled in.4)Press the OK button to save the updates and close the dialog.6-10 Existing Ground ProfileGEOPAK Road Course Guide

Exercise 6 7) Press Yes to delete the 3D line string in the design file. 8) After the profile is stored, exit the Ground Profile dialog and Save Settings. 9) Access Coordinate Geometry. (Press the Coordinate Geometry button on the workflow dialog). 10) Access Navigator and go to Profiles. 11) Select the profile ‘SR95GRN’ and press the Describe icon. 12) Review the profile information in ...